diff --git a/templates/fleet_calendar.html b/templates/fleet_calendar.html
index 09879cf..d67e695 100644
--- a/templates/fleet_calendar.html
+++ b/templates/fleet_calendar.html
@@ -397,13 +397,14 @@
         <div class="bg-white dark:bg-slate-800 rounded-xl shadow-2xl max-w-lg w-full max-h-[90vh] overflow-y-auto" onclick="event.stopPropagation()">
             <div class="p-6">
                 <div class="flex items-center justify-between mb-6">
-                    <h2 class="text-xl font-semibold text-gray-900 dark:text-white">New Reservation</h2>
+                    <h2 class="text-xl font-semibold text-gray-900 dark:text-white" id="modal-title">New Reservation</h2>
                     <button onclick="closeReservationModal()" class="text-gray-400 hover:text-gray-600 dark:hover:text-gray-300">
                         <svg class="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                             <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12"/>
                         </svg>
                     </button>
                 </div>
+                <input type="hidden" id="editing-reservation-id" value="">
 
                 <form id="reservation-form" onsubmit="submitReservation(event)">
                     <!-- Name -->
@@ -522,7 +523,7 @@
                                 class="px-4 py-2 text-gray-700 dark:text-gray-300 hover:bg-gray-100 dark:hover:bg-gray-700 rounded-lg">
                             Cancel
                         </button>
-                        <button type="submit"
+                        <button type="submit" id="modal-submit-btn"
                                 class="px-4 py-2 bg-blue-600 text-white rounded-lg hover:bg-blue-700">
                             Create Reservation
                         </button>
@@ -600,27 +601,83 @@ function closeDayPanel() {
 let reservationModeActive = false;
 
 function openReservationModal() {
+    // Reset to "create" mode
+    document.getElementById('modal-title').textContent = 'New Reservation';
+    document.getElementById('modal-submit-btn').textContent = 'Create Reservation';
+    document.getElementById('editing-reservation-id').value = '';
+    document.getElementById('reservation-form').reset();
+
     document.getElementById('reservation-modal').classList.remove('hidden');
     reservationModeActive = true;
-    // Show reservation legend, hide main legend
     document.getElementById('main-legend').classList.add('md:hidden');
     document.getElementById('main-legend').classList.remove('md:flex');
     document.getElementById('reservation-legend').classList.remove('md:hidden');
     document.getElementById('reservation-legend').classList.add('md:flex');
-    // Trigger availability update
     updateCalendarAvailability();
 }
 
+async function editReservation(id) {
+    try {
+        const response = await fetch(`/api/fleet-calendar/reservations/${id}`);
+        if (!response.ok) { alert('Failed to load reservation'); return; }
+        const res = await response.json();
+
+        // Switch modal to "edit" mode
+        document.getElementById('modal-title').textContent = 'Edit Reservation';
+        document.getElementById('modal-submit-btn').textContent = 'Save Changes';
+        document.getElementById('editing-reservation-id').value = id;
+
+        // Populate fields
+        const form = document.getElementById('reservation-form');
+        form.querySelector('input[name="name"]').value = res.name;
+        form.querySelector('select[name="project_id"]').value = res.project_id || '';
+        form.querySelector('input[name="start_date"]').value = res.start_date;
+        form.querySelector('textarea[name="notes"]').value = res.notes || '';
+
+        // Color radio
+        const colorRadio = form.querySelector(`input[name="color"][value="${res.color}"]`);
+        if (colorRadio) colorRadio.checked = true;
+
+        // Assignment type
+        const atRadio = form.querySelector(`input[name="assignment_type"][value="${res.assignment_type}"]`);
+        if (atRadio) { atRadio.checked = true; toggleAssignmentType(res.assignment_type); }
+        if (res.assignment_type === 'quantity') {
+            form.querySelector('input[name="quantity_needed"]').value = res.quantity_needed || 1;
+        }
+
+        // End date / TBD
+        const tbdCheckbox = document.getElementById('end_date_tbd');
+        if (res.end_date_tbd) {
+            tbdCheckbox.checked = true;
+            form.querySelector('input[name="estimated_end_date"]').value = res.estimated_end_date || '';
+        } else {
+            tbdCheckbox.checked = false;
+            document.getElementById('end_date_input').value = res.end_date || '';
+        }
+        toggleEndDateTBD();
+
+        document.getElementById('reservation-modal').classList.remove('hidden');
+        reservationModeActive = true;
+        document.getElementById('main-legend').classList.add('md:hidden');
+        document.getElementById('main-legend').classList.remove('md:flex');
+        document.getElementById('reservation-legend').classList.remove('md:hidden');
+        document.getElementById('reservation-legend').classList.add('md:flex');
+        updateCalendarAvailability();
+    } catch (error) {
+        console.error('Error loading reservation:', error);
+        alert('Error loading reservation');
+    }
+}
+
 function closeReservationModal() {
     document.getElementById('reservation-modal').classList.add('hidden');
     document.getElementById('reservation-form').reset();
+    document.getElementById('editing-reservation-id').value = '';
     reservationModeActive = false;
-    // Restore main legend
     document.getElementById('main-legend').classList.remove('md:hidden');
     document.getElementById('main-legend').classList.add('md:flex');
     document.getElementById('reservation-legend').classList.add('md:hidden');
     document.getElementById('reservation-legend').classList.remove('md:flex');
-    // Reset calendar colors
     resetCalendarColors();
 }
 
@@ -752,6 +809,7 @@ async function submitReservation(event) {
     const form = event.target;
     const formData = new FormData(form);
     const endDateTbd = formData.get('end_date_tbd') === 'on';
+    const editingId = document.getElementById('editing-reservation-id').value;
 
     const data = {
         name: formData.get('name'),
@@ -766,7 +824,6 @@ async function submitReservation(event) {
         notes: formData.get('notes') || null
     };
 
-    // Validate: need either end_date or TBD checked
     if (!data.end_date && !data.end_date_tbd) {
         alert('Please enter an end date or check "TBD / Ongoing"');
         return;
@@ -778,9 +835,15 @@ async function submitReservation(event) {
         data.unit_ids = formData.getAll('unit_ids');
     }
 
+    const isEdit = editingId !== '';
+    const url = isEdit
+        ? `/api/fleet-calendar/reservations/${editingId}`
+        : '/api/fleet-calendar/reservations';
+    const method = isEdit ? 'PUT' : 'POST';
+
     try {
-        const response = await fetch('/api/fleet-calendar/reservations', {
-            method: 'POST',
+        const response = await fetch(url, {
+            method,
             headers: { 'Content-Type': 'application/json' },
             body: JSON.stringify(data)
         });
@@ -789,14 +852,13 @@ async function submitReservation(event) {
 
         if (result.success) {
             closeReservationModal();
-            // Reload the page to refresh calendar
             window.location.reload();
         } else {
-            alert('Error creating reservation: ' + (result.detail || 'Unknown error'));
+            alert(`Error ${isEdit ? 'saving' : 'creating'} reservation: ` + (result.detail || 'Unknown error'));
         }
     } catch (error) {
         console.error('Error:', error);
-        alert('Error creating reservation');
+        alert(`Error ${isEdit ? 'saving' : 'creating'} reservation`);
     }
 }
 
diff --git a/templates/partials/fleet_calendar/reservations_list.html b/templates/partials/fleet_calendar/reservations_list.html
index 4de84eb..060f598 100644
--- a/templates/partials/fleet_calendar/reservations_list.html
+++ b/templates/partials/fleet_calendar/reservations_list.html
@@ -87,10 +87,7 @@ async function deleteReservation(id, name) {
     }
 }
 
-function editReservation(id) {
-    // For now, just show alert - can implement edit modal later
-    alert('Edit functionality coming soon. For now, delete and recreate the reservation.');
-}
+// editReservation is defined in fleet_calendar.html
 </script>
 {% else %}
 <div class="text-center py-8">